Circuit calibrating method and circuit calibrating system
AssigneePixart Imaging Inc.
InventorsHsiang-Wei Hwang, Yung-Hung Chen, Han-Chi Liu
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Abstract
A circuit calibrating method, applied to an ACS generating circuit, which comprises a plurality of ACS generating units and activates the ACS generating unit corresponding to different DCCs to generate difference ACSs. The circuit calibrating method comprises: (a) determining which one of the ACSs has a large difference from an ideal value thereof; (b) adjusting a number of the ACS generating units, which are activated by a DCC corresponding to the ACS acquired in the step (a), or a next stage of the DCC corresponding to the ACS acquired in the step (a); and (c) generating the ACS to a target circuit, according to the number of the ACS generating circuits adjusted in the step (b).
Claims7
circuit calibrating system, applied to calibrate a target circuit, comprising:
- a digital control code generating circuit, configured to generate a digital control code;
- an analog control signal generating circuit, comprising a plurality of analog control signal generating units, configured to correspondingly activate at least one part of the analog control signal generating units to generate different analog control signals according to different digital control codes;
- a control unit, configured to perform following steps (a)-(c):
- (a) determining which one of the analog control signals has a large difference between an actual value of the analog control signal and an ideal value of the analog control signal;
- (b) adjusting a number of the analog control signal generating units that a digital control code corresponding to the analog control signal acquired in the step (a) can activate, or adjusting a number of the analog control signal generating units that a neighboring stage for the digital control code corresponding to the analog control signal acquired in the step (a) can activate;
- and
- (c)generating the analog control signal to the target circuit, according to the number of the analog control signal generating units, which is adjusted in the step (b).
Dependencies are inferred from the claim text.